It includes an initial survey with imaging (CXR, PXR and FAST), resuscitation and a WBCT scan for complete injury assessment [17].
The remaining 3827 respondents completed the initial survey, with 76, 66 and 57% completing waves two, three and four, respectively, resulting in a total of 11 440 respondent-week records.
One reason may relate to the technically less advanced ultrasound scanners used at the initial survey compared with those used at follow-up.
At the first follow-up examination, 30 months after the initial survey and with a response rate of 91%, polyps were visualized in only 77% (24/31) of subjects; at the second follow-up examination, 84 months after the initial survey and with a response rate of 65%, polyps were identified in 41.9% (13/31) of subjects.
A random sample of 518 chiropractors (of 929 total population) in the province of Alberta, Canada received an initial survey package with a follow-up package sent out three weeks later., The four-page survey contained 34 fixed-choice questions about chiropractors opinions and practices surrounding health product sales.
An initial survey was conducted with a multi-cancer tissue microarray comprising 12 representative samples from each organ/tissue tumour type: lung, breast, ovary, colon, melanoma, pancreatic, kidney, head and neck, liver, and prostate.
The data from this initial survey was then compared with 25 separate measures of each employee's performance.
After the initial survey was completed, participants with AL amyloidosis who provided contact information were sent an eight-question follow-up survey by email.
The range of time since diagnosis for the initial survey (4.6 – 23.0 months) overlapped with that for the follow-up survey (13.0 – 31.8 months).
Any programme to identify carriers of beta thalassaemia involves an initial survey to identify individuals with unusual red blood cell indices, followed by further analysis of abnormal samples.
It was expected that a high proportion of respondents to the initial survey would be patients with AL amyloidosis; therefore, the follow-up survey focused on AL amyloidosis and consisted of eight questions covering amyloidosis treatments, treatment tolerance, and quality of life before and after treatment.
